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You are driving along the street at the speed limit (35mph) and 50 meters before reaching a traffic light you notice it becoming yellow. You accelerate to make the traffic light within the 3 seconds it takes for it to turn red. What is your speed as you cross the intersection? Assume that the acceleration is constant and that there is no air resistance.
Steam is expanded from 12.5 MPa and 900 degrees Celsius to 0.30 MPa, 400 degrees Celsius in an adiabatic turbine. Determine the isentropic efficiency of this turbine
A transverse sinusoidal wave on a string has a period T = 25.0 ms and travels in the negative x direction with a speed of 30.0 m/s. At t = 0, What is the initial phase angle
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, How far from the castle wall does the launched rock hit the ground
At what speed does the speed of the ball change relative to the cab floor (sign and magnitude)?
A horizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.5 rad/s about a fixed vertical axis through its center. What is the mass of the turntable
What is the minimum thickness of the film. what is the magnitude of the average acceleration of the ball through out this time interval.
An isolated conductor of arbitrary shape has a net charge of +1.2 10-5 C. What is the charge on the cavity wall
Three objects with masses, m1 = 6.0 kg, m2 = 10.0 kg, and m3 = 15.0 kg, are attached by strings over frictionless pulleys as indicated. The horizontal surface is frictionless and the system is released from rest. Using energy concepts, find out th..
Tritium (3H) decays by negative beta decay with a half-life of 12.16 years. Use an atomic weight. What is the mass in g of 1 mCi of tritium? 3.026 For 3H.To what nucleus does 3H decay.
A 150-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1680 N, Find the acceleration of the rocket
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 48Nm. With what force must you pull
A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m. Determine maximum height reached by dart.
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